Update health_api.py

[bernsteinj]

Description

Adding docs to health endpoint

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Automated test.

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works

[github-actions]

Wohoo! Your first PR -- thanks for contributing!

[codecov]

Codecov Report

Merging #2411 (4fd2eb5) into master (970492a) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master    #2411   +/-   ##
=======================================
  Coverage   73.22%   73.22%           
=======================================
  Files         112      112           
  Lines        8068     8068           
=======================================
  Hits         5908     5908           
  Misses       2160     2160           

Impacted Files	Coverage Δ
app/api/v2/handlers/health_api.py	100.00% <100.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 970492a...4fd2eb5. Read the comment docs.

[wbooth]

LGTM

[aapplebaum]

looks good